sphere
a washer
A decagon.
A six-sided shape is called a hexagon.
It is known as a regular polygon
A logistic function or curve is a mathematical function having an S shape, known as sigmoid curve. The name was given by Pierre Francois Verhulst in either the year of 1844 or 1845.
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convex
sphere
a washer
Type your answer here... what is the answer
Pentagon
toroid
A decagon.
There is no specific name for such a shape.
There is not a specific name.
octagon